<template>
  <div>
    <!--面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--卡片视图区域-->
    <el-card class="box-card">
      <!--搜索与添加区域-->
      <el-row :gutter="20">
        <el-col :span="7">
          <el-input placeholder="请输入内容" clearable
                    v-model="queryInfo.query" @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>
      <!--用户列表区域-->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column prop="username" label="姓名" width="300"></el-table-column>
        <el-table-column prop="email" label="邮箱" width="180"></el-table-column>
        <el-table-column prop="mobile" label="手机"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column prop="mg_state" label="状态">
          <template slot-scope="scope">
            <el-switch @change="userStateChanged(scope.row)"
                       v-model="scope.row.mg_state">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!--修改按钮-->
            <el-button type="primary" icon="el-icon-edit" size="mini"
                       @click="showEditDialog(scope.row.id)"></el-button>
            <!--删除按钮-->
            <el-button type="danger" icon="el-icon-delete"
                       size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!--分配角色按钮-->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!--  分页区域-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[10, 15, 30, 50,100]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!--添加用户的对话框-->
    <el-dialog
      title="添加用户" :visible.sync="addDialogVisible"
      width="50%" @close="dialogClosed('addFormRef')">
      <!--内容主体区域-->
      <el-form :model="addForm" :rules="formRules" ref="addFormRef"
               label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input type="password" v-model="addForm.password" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile" autocomplete="off"></el-input>
        </el-form-item>
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
  </span>
    </el-dialog>
    <!--  修改用户的对话框-->
    <el-dialog
      title="修改用户" :visible.sync="editDialogVisible"
      width="50%" @close="dialogClosed('editFormRef')">
      <!--内容主体区域-->
      <el-form :model="editForm" :rules="formRules" ref="editFormRef"
               label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" :disabled="true"
                    autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile" autocomplete="off"></el-input>
        </el-form-item>
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUser">确 定</el-button>
  </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible"
               width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前用户：{{ userInfo.username }}</p>
        <p>当前角色：{{ userInfo.role_name }}</p>
        <p>
          分配角色：
          <el-select
            v-model="selectRoleId"
            filterable
            allow-create
            default-first-option
            placeholder="请选择角色"
          >
            <el-option
              v-for="item in rolesLsit"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            ></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Users',
  data () {
    // 验证邮箱的规则
    const checkEmail = (rule, value, cb) => {
      // const regEmail = /^\w+@\w+(\.\w+)+$/
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        return cb()
      }
      // 返回一个错误提示
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机的规则
    const checkMobile = (rule, value, cb) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      // 返回一个错误提示
      cb(new Error('请输入合法的手机号码'))
    }
    return {
      //  获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前页数
        pagenum: 1,
        // 当前每页显示条数
        pagesize: 10
      },
      userList: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 修改用户的表单数据
      editForm: {
        id: '',
        username: '',
        email: '',
        mobile: ''
      },
      //  添加表单的验证规则对象
      formRules: {
        username: [
          {
            required: true,
            message: '请输入用户名',
            trigger: 'blur'
          },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3~10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          {
            required: true,
            message: '请输入密码',
            trigger: 'blur'
          },
          {
            min: 6,
            max: 15,
            message: '密码的长度在6~15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          {
            required: true,
            message: '请输入邮箱',
            trigger: 'blur'
          },
          {
            validator: checkEmail,
            trigger: 'blur'
          }
        ],
        mobile: [
          {
            required: true,
            message: '请输入手机',
            trigger: 'blur'
          },
          {
            validator: checkMobile,
            trigger: 'blur'
          }
        ]
      },
      // 分配角色对话框
      setRoleDialogVisible: false,
      // 当前需要被分配角色的用户
      userInfo: {},
      // 所有角色数据列表
      rolesLsit: [],
      // 已选中的角色Id值
      selectRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      } else {
        this.userList = res.data.users
        this.total = res.data.total
      }
    },
    //  监听PageSize改变的事件
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变事件
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听Switch开关状态的改变
    async userStateChanged (userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/
      ${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        // 如果更新失败 将页面上的已更改的状态重置
        userInfo.mg_state = !userInfo.mg_state
        return this.$http.error('更新用户状态失败')
      } else {
        this.$message.success('更新用户状态成功')
      }
      // console.log(userInfo)
    },
    //  监听添加用户对话框关闭事件
    dialogClosed (formRefName) {
      this.$refs[formRefName].resetFields()
    },
    //  添加用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) return
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        } else {
          this.$message.success('添加用户成功')
          // 隐藏添加用户的对话框
          this.addDialogVisible = false
          //  重新获取用户列数据
          this.getUserList()
        }
      })
    },
    // 显示修改对话框
    async showEditDialog (id) {
      // 根据id获取用户信息
      const { data: res } = await this.$http.get(`users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户失败!')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 提交修改用户
    editUser () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put(`users/${this.editForm.id}`,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          })

        if (res.meta.status !== 200) {
          return this.$message.error('修改用户信息失败')
        }
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('修改用户信息成功')
      })
    },
    // 删除用户信息
    async removeUserById (id) {
      // 询问用户是否删除用户信息
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消了删除，则返回值为字符串 cancel
      if (confirmResult === 'cancel') {
        return this.$message.info('已消取删除')
      }
      //  发起删除请求
      const { data: res } = await this.$http.delete(`users/${id}`)
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      } else {
        this.$message.success('删除用户成功')
        this.getUserList()
      }
    },
    //  展示分配角色的对话框
    async showSetRole (role) {
      this.userInfo = role
      // 展示对话框之前，获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolesLsit = res.data
      this.setRoleDialogVisible = true
      console.log(this.rolesLsit)
    },
    // 分配角色对话框关闭事件
    setRoleDialogClosed () {
      this.selectRoleId = ''
      this.userInfo = {}
    },
    async saveRoleInfo () {
      if (!this.selectRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectRoleId })
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('更新用户角色失败！')
      }
      this.$message.success('更新角色成功！')
      await this.getUserList()
      this.setRoleDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>

</style>
